1. The main material is 137*40*3.0 plain elliptic tube;;

2, hand with soft PVC extrusion forming relative rubber extrusion forming more resistant to wear and tear.

3, the use of high strength aluminum alloy end cover, beautiful and generous, durable, never fade.
4, the seat cushion adopts the human engineering principle to form a design, fit the human curve, comfort and durable.

5,trajectory, centripetal and centrifugal accord with human body biological mechanics principle.